I can think of several things that would be intereting:

For example a world in which conventional electrical generation and storage don't work - so you could have IC if you hand lit the engine. No batteries, not cranks starters like early autos. You may have to light something with a match and set a clockwork to ignite the engine in 30 seconds and have to run for the car seat. Of course making this design without electricity would be interesting.

Incidentally Zelazny did fairly convincing universes in which electricity and conventional gunpowder did not work, in the Amber series, but this was in a magic multi-verse and he did not pretend there was a scientific explanation. I'm fine with fantasy that either simply says "this is magic not science" or that say "huh this is weird and none of the charactes have any idea of how it works".

Heinlein's "Magic Incorporated" was very funny and pretty convincing too. Set in our world, after some engineers are caught muttering spells to keep a nuclear reactor running, and it turns out that science has been a fraud all along - everything has really been running by magic. So now it is well after that discovery, and it is mystery, danger and political intrigue in a world where the magic is now open, and we ride magic carpets that are no longer disguised as jets...

It does include Heinlein's usual attitude towards women, plus a bit of racism he thinks is tolerance. So not without eyerollingness, But the premise gets points for me for sheer chutzpah .And if you can ignore the stuff you pretty much always have to ignore with Heinlein, it is quite entertaining.

For example a world in which conventional electrical generation and storage don't work - so you could have IC if you hand lit the engine.

But why wouldn't it work? No conductive metals? Only specific chemical reactions don't work? These things bother me. I can imagine a culture in which something other than electricity drives most technology and electricity is a parlor trick. That's steampunk, more or less. I'm happy enough with a technology based on handwavium, as long as the rest of physics is left alone.

As opposed to out and out magic, the SF I read that was confincing along those lines had alien energy beings that specifically fed on electricity concentrations above a certain level - so no new laws of physicas and most biological electricity was at two low a level to attract their attentions. So small enough power sources could work to drive low power electronic devices. You just had to keep electrical energy below the threshold they automatically hooverd up.

That would probably not bother my brain, because physics would still be there, and there'd be the challenge of creating very low voltage things, preferably to kill the aliens with so we could go back to big cars and Vegas.

That was a good Alcatraz. I do wish they'd shown these in order.

Heeeey, it's that guy from The 4400 ! I like him.

I think the thing that bothered me most about the premise of Ariel was that bicycles no longer worked, either. That was the point where the book was flung, for me.

Still reeling from Walking Dead. "Don't come back, Shane!" indeed.

Heinlein's "Magic Incorporated" was very funny and pretty convincing too. Set in our world, after some engineers are caught muttering spells to keep a nuclear reactor running, and it turns out that science has been a fraud all along

That is not in the plot of Magic, Inc.

Magic, inc. is a story from the POV of a local contractor and building materials provider. He uses magic in the everyday workings of his life, like most other people. His livelihood is threatened by a "magical mob" takeover of the magic business in his state, which is spearheaded by a demon.

As far as the racism and sexism, I can only say that in historical context of other works of the time, RAH was slightly ahead of the curve. Not as bad as some of the period, better than some others. He was also writing for mainstream American publishing at the time and was quite the libertarian.(Although he would have laughed at the Tea Party "patriots")

Amanda Jennings was a fairly strong female character in that story.

That is not in the plot of Magic, Inc.

Yes it is. Right toward the beginning, tossed off causually not in an "as you know jack" way, but there. And mentioning the racism and sexism was there mainly for warning. I'm reccing the book as entertainment, but I don't want someone to hit it unwarned if they are already living with enough of it that it will more than neutralize any pleasure they would otherwise get out of it. One difference between Heinlein and many others on sexism is that he takes the trouble to rationalize it. It may actually say something good about him that he was not just taking it for granted, but it might make more unpleasant for a woman who encounters it unexpectedly. The way Chesterton's thoughf out and explained anti-semitism hits me harder than other stuff from the same period that tosses it off causally.